Improvement in friction-gear for driving and -supporting millstones



G. l. SHUTTLEWORTH. Friction-Gear m Driving and Supporting Mill Stones- No 154156 7 Pate'nted Aug.18,1874.

Ill 529mm THE GRAPHIC CO,PHOTD UTH.39& 4| PARK FLACEJLX porting Millstones,

UNITED STATES PATENT OFFIoE.

IMPROVEMENT IN FRICTION-GEAR FOR DRIVING AND SUPPORTING MILLSTONES.

Specification forming part ofLetters Patent No. 1 54,156, dated August 18, 1874; application filed April 3, 1874.

To all whom :it may concern Be it known that I, CHARLES J. SHUTTLE- WORTH, of Springville, in the county of Erie and State of New York, have invented an Improved Friction-Gear for Driving and Supof which the following is a specification:

Myinvention relates to an improved method of driving, supporting, and adjusting vertical shafts by means of friction-gear, thereby dispensing with the use of a step for such shafts, and avoiding the loss of power resulting from the friction incident to this mode of support.

In the accompanying drawings, Figure 1 is an elevation of my improvements with the bed or supporting frame in section in line 00 as, Fig.

Fig. 2 is a sectional elevation in line 3 y, Fig. 3. Fig. 3 is a plan of the friction driving-wheel and adjustable supporting-frame thereof. Fig. 4 is a partly-sectional elevation of the bearings for one end of the adjustable frame. Fig. 5 is a vertical section of one end of the adjustable frame.

Like letters of reference designate like parts in each of the figures. v

A represents any frame adapted for supporting a portable grinding-mill; B, the lower stone; 0, the millstone-spindle and D, a bevel friction-wheel mounted thereon near the lower end; and E, a similar friction driving-wheel or pinion engaging therewith and mounted on a horizontal shaft, F, which has its bearings in an adjustable frame, G. This frame is preferably constructed with two arms, 9 70, extending from opposite sides of the frame and supported at their ends as follows: The arm 9 terminates in boxes g 9 the lower being hinged to the end of the arm. as shown at h,

Fig. 5, and secured to the rigid box 9 by a bolt, '5. J is a short trunnion passing through the boxes g 9 and supported at its ends in bearing-blocks l lresting in the ends of a castiron bed-plate, M. The trunnion J is adjusted endwise by means of set-screws 70, while the blocks 1 are adjusted within the frame M by set-screws 0. p p are set'screws, passing through the box g, with their ends resting on the top of the trunnion, by means of which and the hinged box g the frame G can be tipped or inclined in either direction, as shown in Fig. 4., for a purpose to be presently explained. The opposite arm 70 of the frame is supported between guide-standards t by a suspension-rod, g, by which this end of the frame can be adjusted vertically, as may be required.

The guide-standards are cast in one piece with a base, t, which is secured to the side of the frame by bolts 17 passing through slots, by which the position of the standards can be readily adjusted. The lower end of the spindle G fits in a box or bearing, 7', secured by set-screws s between two cars of a bearingblock, to, attached to the frame G by a pivot, 2, by which the foot of the spindle can be adjusted in line of said screws, which also form pivots, on which the box 7 can turn. to a are loose and tight pulleys on the end of the driving-shaft F.

The parts beingconstructed, as above described, it is evident that the weight of the vertical spindle and its attachments are supported by the friction driving-wheel E, and serve to produce the necessary friction between the two wheels to render the gearing operative. I have found by experience that by making the frictionwheels of wood, especially the driving-pinion, with the end of the grain outward, a most durable and efficient gearing is produced.

The driving-wheel and spindle G are readily adjusted in the various directions required, as follows: The frame Gris adjusted legthwise, or at right angles to the shaft F, by means of the set-screws o and movable bearing-blocks Z. It is adjusted in line of the shaft F by means of the adjustable guide-standards t t at one end, and by means of the set-screws a pressing against the ends of the trunnion J at the opposite end of the frame. The frame is ad justed vertically at one end by means of the suspension-rod q, while the face of the driving-wheel can be adjusted, if required, to in sure the perfect engagement of the frictionsurfaces of the two wheels D E. The bearing-block wand pivoted box rfor the lower end of the vertical shaft allow it to adapt itself to this shaft, whether the shaft F and frame G are exactly'horizontal or not. The pivots s. of v the box enables the lower end of the spindle C to be adjusted a trifle out of line of the horizontal shaft F, either to the right or to the left, according as the mill may run,

with the sun or against the sun. This will' other vertical spindle can be adjusted, are obvious.

My improvements are adapted for driving spindles which run the upper as well as the lower stone, and for stationary and portable mills alike.

What I claim as my invention is 1. The combination, with a vertical shaft provided with a bevel friction-wheel, D, of the bevel friction driving-wheel E, whereby the said shaft and its attachments are driven and supported, substantially as set forth.

2. The combination, with the mill-spindle O and friction-wheel D, of an adjustable frame, carrying a friction driving and supporting wheel, E, and box for the lower end of the mill-spindle. .by which the latter is adjusted, substantially as set forth.

3. The combination, with the vertical spindle O and friction-wheel D, of the frame G, friction driving-wheel E, box 4', bearing w, and. suspension-rod g, by which the spindle is vertically adjusted, substantially as set forth.

4. The combination, with the vertical shaft and friction driving-gear D E, of theadjustable box 7', for throwing the foot of the vertical shaft out of line with the driving-shaft, substantially as and for the purpose set forth.

5. The combination, with the frame G, of the adjustable guide-standards t t and adjustable trunnion J, substantially as and for the purpose set forth.

6. The combination, with the frame G and trunnion J, of stationary box 9 hinged box 9 and set-screw n, for adjusting the friction driving-wheel, substantially as set forth.

. G. J. SHUTTLEWORTH.

Witnesses:

FRANK GnAsE, M. L. BADGLEY. 

